11-Ketodihydrotestosterone (11-KDHT), also known as 5ñ-androstan-17ò-ol-3,11-dione, is an endogenous, naturally occurring steroid and androgen prohormone that is produced primarily, if not exclusively, in the adrenal glands. It is closely related to 11ò-hydroxyandrostenedione (11ò-KA4), adrenosterone (11-ketoandrostenedione; 11-KA4), and 11-ketotestosterone (11-KT), which are also produced in the adrenal glands.